void __fastcall DUMPER_FixChecksum(BYTE* pFile, DWORD dwSize)
{
   if (pFile == 0 || dwSize < 0)
      return;

   DWORD* pSignature = (DWORD*)(pFile+0xC);
   *pSignature = 0;
   
   int nSignature = 0;
   for (DWORD i = 0; i < dwSize; i++) {
      int byte = pFile[i];
      if (nSignature < 0)
         byte++;
      nSignature = byte + nSignature * 2;
   }
   *pSignature = nSignature;
}